Expand and collapse items
In List view, items with children can be expanded or collapsed to show or hide their sub-items.
Shift + Space — Toggle expand/collapse for the selected itemsShift + → — Expand the selected itemsShift + ← — Collapse the selected itemsShift + Alt/Opt + ← — Collapse all sub-itemsShift + Alt/Opt + → — Expand all sub-items